yashsingh1/xdaforums huggingface dataset:
[Nokia Lumia 920] voluptuary:
I believe the only way to get from ATT to Rogers and for that matter Euro DEV is to do ATT (pre or post protico) to Rogers

pre

-portico then update via OTA then Euro Dev. The way back to ATT is kinda unknown because... well why the hell would you want to go back to a restricted bloat filled turd like the ATT ROM. Anyways this was all covered and gone over in the other thread about the Euro Dev ROM and a little in the Lost Rogers AWS thread....
[Nokia Lumia 920] oldyas:
I want to flash rm-820 for ATT to firmware rm-821 but I have an error

0xFA001304: Platform ID check fails. Reason(s): The FFU file is not meant for this product. The platform ID of image does not match with platform ID of the device.

Nokia.CareSuite.PlugIns.MurzimRecovery.RecoveryDialog.MurzimProgrammingException: 0xFA001304: Platform ID check fails. Reason(s): The FFU file is not meant for this product. The platform ID of image does not match with platform ID of the device.

в Nokia.CareSuite.PlugIns.MurzimRecovery.RecoveryDialog.RecoveryDialogModel.Flash()

в Nokia.CareSuite.PlugIns.MurzimRecovery.RecoveryDialog.RecoveryDialogModel.<HandleDownloadVariantPackageCompleted>b__8(Object state)
[Nokia Lumia 920] petard:
I just flashed ROGERS pre-portico on my AT&T 920 and installed Access Point. I'm able to tether .

Now I'm trying to get the unbranded Euro dev ROM installed, but if I can't get that, the Rogers ROM is good enough. No restrictions, gets updates when AT&T ROM does, and lets me tether. Might be best to stay on it, actually!

Edit: Can't seem to get LTE working on the Rogers ROM... Odd since they use the same LTE bands, don't they?
[Nokia Lumia 920] habnzrot:
Hi, could you provide a link to the latest NCS 2013? Thank you for the tutorial but unfortunately it doesn't work for me.
[Nokia Lumia 920] halabibk:
You can download the latest version in this thread over here:

http://xdaforums.com/showthread.php?t=1605144

Uninstall the old version and install this, them update to latest version from the NCS.

So far to go from any 821 to 820 ATT “fail”, form any 821 to 820 Roger “work ok”, this happen with portico.

I am download the ATT pre-portico to try again If I get this successfully I will modify the post to explain how to go from 821 to 820 ATT and from 820 Roger to 820 ATT.

Stay tune…!
[Nokia Lumia 920] petard:
I updated Rogers to Portico and using the Access Point app and switching to 2G max then back to LTE max, my ATT 920 now is running Rogers ROM and lets me access LTE, but it's giving me the stupid call 611 message when I try to tether now. ****.

Flashed Euro Dev Portico ROM. No go on tethering with that, either. Going back to rogers portico now. I was able to enable tethering a few times with Rogers, but it started giving me that dumb message consistently. Damn AT&T.
[Nokia Lumia 920] voluptuary:
Try to manually set up the APN, or if you can reset your phone using the Euro Dev ROM with your SIM in the phone to allow ADC to run. What is happening is when you switch to LTE it pulls ATT's settings (which include the tethering block) from pre-defined APN's stored on the phone, not from the SIM itself. Although under the Euro Dev ROM you probably won't get LTE because I believe the bands are set differently than what is needed for ATT but you should still be able to tether via 3G(H) or 4G(H+)
[Nokia Lumia 920] petard:
I couldn't get LTE to work on the Euro so that was unacceptable. Back to the rogers, still getting the dumb message to call at&t. I give up, I don't even use the 920 as my primary phone, and this is a big reason why. Back to my Note 2.
[Nokia Lumia 920] BabyHuey:
going from any 821 rom to att portico or pre portico won't work. tried the pre portico just now... so...have you tried rogers to att pre portico?
[Nokia Lumia 920] halabibk:
I don't know why but I can not go to ATT, with portico and pre-portico, but from any 821 to 820 Roger work fine. I will keep look at it, I hope my phone doesn't get screw with to many flash.
[Nokia Lumia 920] BabyHuey:
you can't go to att pre portico with rogers rom are you saying?
[Nokia Lumia 920] halabibk:
No, I can not go to 820 ATT, but I can go to 820 Roger Portico and working also to go to 820 Argentina (New FW)

RM820_1232.5951.1249.1001_RETAIL_lta_argentina_264_01_128421_prd_signed.ffu

I am going to try 820 LTA (Latin American NEW also)

RM820_1232.5951.1249.1001_RETAIL_lta_lta1_266_01_129724_prd_signed
[Nokia Lumia 920] BabyHuey:
Sweeet. Plz let me know if that works to go back to att rom
[Nokia Lumia 920] halabibk:
Both new 820 work changing from 821.

So far fail to change to 820 ATT and 822 China...
[Nokia Lumia 920] BabyHuey:
Ha.. Forget it. Its not possible to go bak. Im on the rom u came from. Vodafone portico. No problems at all... Did urs run good also?
[Nokia Lumia 920] halabibk:
Every rom I try it. I found a bad bug, if you go to SETTING-CELLULAR and disable data connection and you put in the connection speed 3G, 4G or LTE and press network selection, the phone will try it to search for network and them REBOOT.

BAD BAD on nokia or WP8.

Can any one try it this????
[Nokia Lumia 920] RikP:
ok will try NCS 2013 (is that Nokia_Care_Suite_PST_5.0_2012.51.4.4?)

other (maybe stupid) question. Will flashing to a 821 ROM remove the simlock?
[Nokia Lumia 920] voluptuary:
No, you can not remove a simlock by flashing.
[Nokia Lumia 920] SlayerX:
So my big question is:

Can i safely install any of the RM-820 Firmwares without having to worry about messing up the bands. I would really like to get the Rogers crap off and have it completely unbranded. I was temped to try the RM-820_country_var_soc_...... firmware. anyone have any info about it?
[Nokia Lumia 920] halabibk:
If your phone is original RM-820 that will not happen, so far happen when you go from original RM-821 to RM-820, the only problem is that I test all the RM-820 except the ATT and the others rom does not have 4G. 4G only in Roger and ATT so far.
[Nokia Lumia 920] ellokomen:
I cannot flash different ROMs of the same cellphone model into my lumia

I got an ATT 920 and I cannot flash the rogers rom nor the new orange_DR rom

I always got the message FFU device id mismatch

Any help???
[Nokia Lumia 920] FearL0rd:
is it will make att phone work in tmobile?

:cyclops:
[Nokia Lumia 920] bujcri:
No luck for me, too, cannot flash any rm-821 over at&t'2 rm-820, I always get the same error "0xFA001304: Platform ID check fails. Reason(s): The FFU file is not meant for this product. The platform ID of image does not match with platform ID of the device.". I can flsh rm-820 over rm-820, but only it it's from nt&t, nothing else. What can be going wrong?
[Nokia Lumia 920] halabibk:
For some reason there is no way to change a RM-820 ATT and RM-822 to RM-821. Everything else RM-820 can go RM-821 and vice versa.
[Nokia Lumia 920] bujcri:
In the 1st post it says "Nokia Lumia ATT or Roger Product RM-820 to International Version RM-821". I wasted 2 days trying but thanks anyway...
[Nokia Lumia 920] patrick92260:
Not true, I was able to flash my ATT 920 to the euro dev rom. The issue seems to be that you have to install the Rogers rom first then you can flash any RM-821 rom on an ATT 920.
[Nokia Lumia 920] abelitin:
Patrick, if you don't mind my asking... When you installed the DEV rom, were you able to restore your old settings (apps et al)? The reason I ask is because when I've done a hard reset on my unlocked Rogers (never re-flashed, though), I can't restore the apps and have had to start from scratch, because I can't get data via 3G (somehow the phone does not like my provider's settings, I guess I should thank Rogers for that!) and I can't set up the access point until I finish the initial set up, by which time it is too late to restore, so I have to start from zero, re-installing all the other apps.
[Nokia Lumia 920] bujcri:
I tried to flash Rogers on my ATT Lumia 920, using latest Nokia Care Suite and also 2nd last version, but I couldn't do it. How did you manage to flash Rogers successfully?
[Nokia Lumia 920] patrick92260:
I didn't do anything special, just downloaded the rogers pre-portico and flashed with NCS. I'm not sure why it isn't working for you.

Nope, I have the same problem. It seems nothing is going to fix this until Microsoft lets you setup wifi during initial boot.
[Nokia Lumia 920] bujcri:
Is the rogers firmware version that you installed 1232.5951.1249.0001?
[Nokia Lumia 920] halabibk:
Well try it to go back to ATT and let us know how to do that.

Thanks
[Nokia Lumia 920] halabibk:
The reason I exclude the ATT is because somehow after you change to RM-821 you can not go to ATT again. So I advice not to flash any ATT to 821.

or you may try it to change your ATT 821 to ATT 820 and help us and explain what you do...
[Nokia Lumia 920] halabibk:
All the test I did from 820 to 821 and vice versa was in my Nokia RM-821 (Vodafone DE) that unfortunately have problem with the bands issue.

Anyone knows how to fix the issue of rebooting every time you need to search for network?

I try to flash any RM-820 (not ATT) and a lot of RM-821, no luck so far.
[Nokia Lumia 920] patrick92260:
No it was the pre-portico rogers rom.

I'm not going to try reflashing the ATT rom. I have no reason to because I like the dev rom and so I don't have to start from scratch again with all my apps and settings.
[Nokia Lumia 920] bujcri:
I can't find other Rogers rom. Can you give me a name or firmware version, please.
[Nokia Lumia 920] halabibk:
But if you decide to go again to ATT, don't forget to share how you do it.

Thanks.

I test pre-portico and portico no luck to go ATT with NCS old and New no luck....
[Nokia Lumia 920] abelitin:
Thanks. It seems I'll have to wait until MS decides to make it a normal experience for us.
[Nokia Lumia 920] bujcri:
So, did anybody here successfully flash a non-ATT rom on ATT RM-820? For me, whatever I try, it doesn't work...
[Nokia Lumia 920] bujcri:
Ok, so I managed myself to do it, but it wasn't easy, till I put all the pieces together. Here it's how and what's different from the first post:

1. Download rogers pre-portico rom from the next link in your ProgramData\Nokia\Packages\Products\rm-820 folder (if you don't find your ProgramData, un-hide hidden folder from Control Panel\Folder Options) (notice that NaviFirm does't list this rom anymore, guess why :)): http://wp.it168.com/thread-217624-1-1.html

2. Remove the checksum from all the downloaded file names

(e.g. 985F2CE8_RM820_1232.2109.1242.1002_RETAIL_nam_cana da_200_02_100347_prd_signed.ffu

would be renamed to

RM820_1232.2109.1242.1002_RETAIL_nam_canada_200_02 _100347_prd_signed.ffu

and so on for the other remaining files, otherwise NCS will not allow you to flash the rom due to "invalid signature"

Thanks ka84 for this tip form here: http://forums.wpcentral.com/nokia-l...ws-bands-back-bricked-rogers-lumia-920-a.html

3. Now flash this rogers pre-portico rom on your ATT Nokia Lumia 920 (accept the warning about non-matching rom)

4. Some users say they were able to flash other RM-821 roms over this rogers, it did not work for me, not even the portico rogers rom, so, if it's your case, too, update the phone in settings/update to the rogers portico rom

5. After the update installs, for safety reset your phone from settings/about

6. Now download and install with NCS whatever RM-821 rom you want. It does not mater if you open and RM-820 or RM-821 product with NCS.

If you're in North America, this might be screwing your LTE network, since RM-821 is for Europe and frequencies are different so find more info about this, before you do it.

I tried a bit to flash again ATT RM-820 on my newly flashed RM-821 and it did not work, like it says in the first post. Now I am not interested to go back to ATT RM-820, since I am in Europe, but just in case you have in mind to go back... well, it might be tricky...
[Nokia Lumia 920] darkone2k4:
Hi.

I'm from Chile and i have a Lumia 920 Roger RM-820_nam_canada_200 v1232.5951.1249.0001

Can i change to RM-821?

thanks.
[Nokia Lumia 920] bujcri:
Yes, you can, since it's a rogers rom, follow just the steps from the first post of this thread using Nokia Care Suite.
[Nokia Lumia 920] darkone2k4:
thanks.

How i can know, what's the correct ROM for me?
[Nokia Lumia 920] bujcri:
Well, since your phone is a rogers, the corect rom is of course rogers. If you want to debrand your phone, than you can choose a rom for latin america marked as AMERICA LTA1.

If you make your phone a RM-821 device, than you can choose one of the roms marked as RM-821. But, my advice, stick to a rom meant for latin america.
[Nokia Lumia 920] darkone2k4:
thanks again.

then I can choose any ROM AMERICA 821 LTA, right?

I found a ROM that says GLOBAL, which of the two would be better?
[Nokia Lumia 920] bujcri:
I wold go with AMERICA 821 LTA rom, I installed once a GLOBAL one, but I did not have the option "4G" as the maximum connection speed, so I had to change it.
[Nokia Lumia 920] darkone2k4:
no matter the product code or I have to download a FW with the current product code?
[Nokia Lumia 920] bujcri:
Code is not important as long as it's a RM-820 or RM-821 rom. Download a rom though that matched your phone color (black, white etc.)
[Nokia Lumia 920] kingwild:
Hi,

I managed to upgrade from AT&T to Rogers but I have an issue: Since I use a Vodafone simcard, the connection is not recognized so I cannot restore a backup. I manually have to input my APN but that's too late to restore. Any clues about this ?
[Nokia Lumia 920] darkone2k4:
thanks.

i can upgrade from roger 820 FW to Global 821 FW, but I have no LTE :crying:
[Nokia Lumia 920] bujcri:
It's not an upgrade from 820 to 821. The firmware is pretty much the same, it's just 820 is for Americas and 821 for the rest of the world (including some south america states) except China. The problem with the Global marked roms, from what I noticed is that it disables LTE cos frequencies are different in europe and north america (I dont know the frequencies for south america). But since you have a 821 for south america (LTA1), you can install 821 for south america rom and everything should work.

---------- Post added at 08:49 PM ---------- Previous post was at 08:47 PM ----------

Try to install a debranded rom for your location, why stop to rogers since it's not your carrier...
[Nokia Lumia 920] darkone2k4:
thanks again.

the "problem" is that I have not found an unbranded FW for south america.
[Nokia Lumia 920] bujcri:
I'm pretty sure I saw a RM-820 unbranded for Brasil, you should check or else you can try an European 821.
[Nokia Lumia 920] abelitin:
But I was under the impression that even the developer ROM would not allow to access data until the APN could be set up? (granted, it makes no sense to me, but that's what someone else told me on a thread, and that's why I haven't debranded my unlocked Rogers, because I don't want to install everything again. My provider is AWS..
[Nokia Lumia 920] DukeNukem:
RM-821 -> RM-820 LTE Frequencies

Seems to be an often asked question, but without a clear answer. If I flash my RM-821 to an RM-820 firmware will I get the different LTE frequencies or are the frequencies a unchangeable hardware thing? What I'm trying to do is use my unlocked RM-821 in Canada.

Thanks
[Nokia Lumia 920] dingokevin:
Anyone have a trick to go back to 820 from 821.the 821 apns will not work for my straight talk sim.
[Nokia Lumia 920] bujcri:
I was going to try this, but I gave up cos now I installed too many apps and I don't feel like starting over, the plan was to try install pre-portico rogers (instructions in my post #52 in this thread) but I am not sure that it works, maybe you wanna try...
[Nokia Lumia 920] DyeLongJustice:
So, by reading up, I've realized that it's impossible to get back to ATT once you've flashed to Rogers. I've made a major mistake, I suppose. I just bought a used 920 locked to ATT. I flashed it to Rogers (just to see how it worked, and thinking I could go back). I then called ATT, who gave me an unlock code. However, I'm stuck on Rogers, and when I input the code she gave me, it gives me a "sim error". So, I'm not sure if the code she gave me doesn't work, or if I'm screwed because I'm on Rogers now, and can't unlock it.

If anyone can help, that would be awesome!
[Nokia Lumia 920] bujcri:
Have you tried to install pre-portico rm-820 then ATT rm-820 like I suggested just above your question. If you try and works or doesn't, maybe you wanna post about it.
[Nokia Lumia 920] DyeLongJustice:
Yeah, so I ended up selling the phone on eBay (I got it for a song on Craigslist). Basically, this is what I did (and what I found out).

Phone originally came with Portico ATT Rom. I had to flash it down to pre-portico ATT rom before I could flash a Rogers rom (pre-portico as well). I then did an OTA Rogers to Portico. I then flashed the European Developer rom. Right after this, I got an answer from ATT customer service, who gave me two possible numbers for unlock codes (they were named PUK's or something, and on a side note, when I tried these, they didn't work). I know that flashing roms shouldn't affect Sim-Lock status, but I wasn't sure if having an unlock code for an ATT on a different rom screwed it's unlockability somehow. Anyway, so after getting these, I tried to flash back to both Pre and Post Portico ATT roms, with no luck. Then I tried to flash back to pre-portico Rogers rom, which worked, but couldn't flash from that back to pre-portico ATT rom. So THENNN I tried to flash both pre and post Portico Rogers rom to the pwbassy ATT rom, but I still had no luck, and subsequently gave up.

Long post, I know, but that's at least my trial/error for flashing back to ATT. I couldn't figure it out, as it kept saying that they FUU wasn't meant for my product code, even though it was originally an ATT phone....Oh well...

---------- Post added at 01:34 AM ---------- Previous post was at 01:33 AM ----------

Also just FYI, I was able to flash the 1308 Rogers rom onto my ATT Lumia.
[Nokia Lumia 920] boril:
how you manage to get unlock code for your at&t phone ?
[Nokia Lumia 920] DyeLongJustice:
I called up ATT's customer service and asked for it. It was like 9pm at night, and I talked to some chick who sounded like she was working out of her house. I don't know if she was supposed to, or if it was even the right unlock code (I couldn't get it to unlock my sim, but it was AFTER I flashed it to Rogers).
[Nokia Lumia 920] ravish_919:
Anyone tried flashing RM-820 or 821 in a RM-822 Lumia 920 ?..
[Nokia Lumia 920] nettcom:
back again to ATT successfully flashed

Steep by steep:

I have flashed successfully from ATT to Rogers RM-820

but can not update do rm-821.... any one know any rm-821 successfully rom flashed?

and from rogers (from your link download) back again to ATT successfully flashed.......!

(ATT white: RM820_1232.5962.1314.0001_RETAIL_nam_usa_100_01_167647_prd_signed.ffu)
[Nokia Lumia 920] bujcri:
What do you mean "any rm-821 successfully rom flashed"?

The steps above are just meant to flash rm-821 and I am now on rm-821 after flashing over ATT rm-820. It's just that once rm-821 flashed it's difficult or impossible to go back to ATT rm-820, I mean nobody has yet announced any success. Personally, I haven't even tried.
[Nokia Lumia 920] buffalosolja42:
Has anyone flashed the new update?

nm
[Nokia Lumia 920] Damionix:
Quick Guide If You Don't Mind... Thanks

So, I am new to the Flashing of Nokia Lumia Roms.

I will like to flash mine to the international Version for Various reasons such as not being tied to ATT in anyway.

So, I have the Yello Lumia 920 and I have all my updates.

So, please could anyone kindly tell me or direct me as to what to do?

I am quite experienced with Flashing and would like to avoid Bricking my phone in anyway.

Much Appreciated.

Thanks
[Nokia Lumia 920] bujcri:
See post #52. You have all you need there.
[Nokia Lumia 920] Damionix:
Which European Unbranded ROM

Which European Unbranded ROM for Yellow Device Would you recommend?

I want 4G, but do not actually quite care for LTE.

Thanks.
[Nokia Lumia 920] bujcri:
I guess they're pretty much all the same,except for some apps, which can be found anyway in store, personally I'm on Finnish rom.
[Nokia Lumia 920] Damionix:
Thanks

Ok. Thanks. I will get that :)
[Nokia Lumia 920] Damionix:
Can One Inter-Flash the ROMS? For example, I have Red and White Lumia 920s from ATT, and if I wanna Flash the Rogers Pre-Portico ROMS, do the colors have to match? Or will anyone do? Because I cannot find the Rogers Pre-Portico for Red and White.

Thanks.
[Nokia Lumia 920] smnrock:
I've the same question, does color should match? So which rogers pre-portico rom you downloaded? And after that which European ROM you flashed? Product code please?
[Nokia Lumia 920] andreigann:
Nokia Lumia AT&T white fimrware update

I have a Nokia Lumia 920 AT&T (white version).

I've managed to update the firmware to RM820_059Q6W4_1232.2109.1242.1002_039 from Rogers.

I'm trying to put an european firmware. I've tried RM821_059Q919_1232.5957.1308.0001_195 (Finland) and RM821_059Q9L9_1232.5957.1308.0001_131 (DE) but every time this error appears, even if I try with 820 or 821 folder:

0xFA001304: Platform ID check fails. Reason(s): The FFU file is not meant for this product. The platform ID of image does not match with platform ID of the device.

What I'm doing wrong?

Thanks.
[Nokia Lumia 920] smnrock:
Does the european firmware has option for selecting network mode 2G or 3G? or its restricted like in AT&T?
[Nokia Lumia 920] Damionix:
Any Help?

Any Answer for this one? Please?

Thanks.
[Nokia Lumia 920] netgh0st:
Color doesn't matter. I flashed Rogers pre-Portico Black rom onto my White ATT Lumia 920 without any problem.

---------- Post added at 02:56 AM ---------- Previous post was at 02:50 AM ----------

Originally I had the ATT Lumia 920. I was able to upgrade it to pre-Portico Rogers FW 1232.2109.1242.1002. Then it installed some updates, and apparently ended up on 1308 (this broke my Internet Sharing until I hard-reset the phone via About menu).

So far I tried the following FW upgrade paths:

Rogers 1308 -> Rogers 1314: Yes

Rogers 1314 -> Rogers 1242: No

Rogers 1314 -> LTA LTA1 5951: Yes

LTA LTA1 5951 -> Rogers 1242: No

LTA LTA1 5951 -> Rogers 1314: Yes

So far none of the FW's above were able to flash to either ATT 1242 or ATT 1314

After upgrading to higher Rogers build, I wasn't able to flash the pre-Portico Rogers 1242

Does anyone know why are the upgrade paths so inconsistent? Why does the phone refuse to be flashed to pre-Portico 1242?
[Nokia Lumia 920] andreigann:
I've managed to install the ROM (RM821_059Q919_1232.5957.1308.0001_195): reinstalled Nokia Suite, installed Rogers ROM, made the updates, reseted the phone to factory defaults and then RM821_059Q919_1232.5957.1308.0001_195 worked.
[Nokia Lumia 920] smnrock:
Any one who is using finnish rom or other european ROMs?
[Nokia Lumia 920] zeka1974:
I'm using Portuguese ROM (059R4K1) and I have option to choose 2G / 3G / 4G
[Nokia Lumia 920] colinbo:
I've followed this thread and successfully switched between RM-820 and RM-821 ROMs, but haven't solved my ultimate goal of enabling AWS 1700/2100 on my AT&T Lumia 920 to connect to WIND which I can do on my Rogers Lumia 920.

I have flashed in the following order using Nokia Care Suite 5.0.0 (2013.1.3):

Flash to Pre-Portico Rogers ROM: RM820_059Q6W4_1232.2109.1242.1002_039

OTA Update to Rogers ROM (1308)

Flash to European Developer ROM: RM821_059R4H6_1232.5957.1308.0002_027

Flash to Rogers ROM: RM820_059Q6W4_1232.5962.1314.0000_156

Flash to Global Black Swap ROM: RM821_059Q5C6_1232.5951.1249.1004_044 (No H/H+ as claimed by others, LTE disappeared from network options)

Flash to Rogers ROM: RM820_059Q6W4_1232.5962.1314.0000_156
[Nokia Lumia 920] OJ in Compton:
I think it's very unlikely that we have the ability to enable the bands with the tools and images we currently have Well, I just saw the posts from you and petard in the Q/A section of this board, so this might not necessarily be true. Good luck!
[Nokia Lumia 920] Spectre51:
Can I flash the ATT Dev Device - RM-820_1232.5957.1308.0001_RETAIL_nam_canada_246_01_154187_prd_signed.ffu from product code 059R2L5 onto my retail 920 to debrand it so I can tether without losing LTE ability on AT&T?